CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > ANSYS Meshing & Geometry

[ANSYS Meshing] Problem meshing cylindrical rotor with Hex and Inflation

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 29, 2015, 13:58
Default Problem meshing cylindrical rotor with Hex and Inflation
  #1
New Member
 
Join Date: Jul 2015
Posts: 12
Rep Power: 10
Neo_Zeo is on a distinguished road
Hello!
I´m new here and I´m working in my final project. I have looked for similar threads in the forum but I haven`t found anyone.

I am studying a steam turbine rotor. I have worked testing just simple cylinders to validate my manual calculations with Ansys results.

And now I´m working in the real rotor. I need an hexa mesh, and apply some inflation layers in the surface to provide a better calculation of the thermal layer. But I find problems like these ones:



It´s a big problem for such a simple geometry, so I think I have failed in some important thing.

Could you help me?
Neo_Zeo is offline   Reply With Quote

Old   July 29, 2015, 21:47
Default
  #2
Senior Member
 
Join Date: Mar 2014
Posts: 375
Rep Power: 13
hwet is on a distinguished road
Is this a mechanical problem or fluids related?
hwet is offline   Reply With Quote

Old   July 30, 2015, 05:41
Default
  #3
New Member
 
Join Date: Jul 2015
Posts: 12
Rep Power: 10
Neo_Zeo is on a distinguished road
Quote:
Originally Posted by hwet View Post
Is this a mechanical problem or fluids related?
Static - Structural, and the solution will be exported to the setup of a transient thermal analysis (where this mesh will be used, I thought I would be able to use the same mesh for both problems)
Neo_Zeo is offline   Reply With Quote

Old   August 1, 2015, 13:00
Default
  #4
Senior Member
 
amin.z's Avatar
 
Amin
Join Date: Oct 2013
Location: Germany
Posts: 397
Rep Power: 14
amin.z is on a distinguished road
I think you're following a strange method!!
In CFD Problem we have to set some inflation near the wall for decreasing numerical diffusion near walls due to boundary layer effects!
Now, Do you want set inflation in a structure problem!?
I think the inflation has been suppressed by ANSYS logically.
amin.z is offline   Reply With Quote

Old   August 1, 2015, 16:32
Default
  #5
New Member
 
Join Date: Jul 2015
Posts: 12
Rep Power: 10
Neo_Zeo is on a distinguished road
Quote:
Originally Posted by amin.z View Post
I think you're following a strange method!!
In CFD Problem we have to set some inflation near the wall for decreasing numerical diffusion near walls due to boundary layer effects!
Now, Do you want set inflation in a structure problem!?
I think the inflation has been suppressed by ANSYS logically.
I`ve tried to make a hexa mesh with inflation in a transient thermal analysis and it hasn´t work. However I can apply this mesh in a cylinder geometry or in smaller geometries.

I can make a Tri mesh with inflation with any problem in both structural or thermal

Thank you! I will keep investigating.
Neo_Zeo is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ANSYS Meshing] Hex dominant method and local inflation carlp ANSYS Meshing & Geometry 8 July 12, 2012 09:02
Getting prism to inflate into mixed tet-hex meshes Joe CFX 16 October 10, 2011 08:06


All times are GMT -4. The time now is 13:07.